Jennifer Lopez's New Man Casper Smart: See Him Dance!

Jennifer Lopez's new beau is her backup dancer Casper Smart – and one look at his skills on the dance floor makes a convincing case that sparks could fly. (He's the one in the black hat with the red brim!)

A YouTube video highlights the tattooed Smart's fluid moves in this video, for Kelly Rowland's song "Motivation," which he choreographed and filmed for his reel.

Smart, 24, has also appeared on Glee, and worked on music videos with artists such as Jordin Sparks, Eminem and Toni Braxton.

But don't expect Lopez, 42, to start gushing about the new man in her life anytime soon. "At the end of the day, until I'm in a really serious relationship, because of the babies, I'm not really going to be commenting on my personal life," she said on Ryan Seacrest's radio show recently.

A source close to Lopez also described her casual new relationship with Smart, telling PEOPLE, "They're just having fun."